In Sweden, the coverage of collective agreements is very high, although there are no legal mechanisms to extend agreements to entire sectors. In 2018, 83% of all private sector employees were covered by collective agreements, 100% of public sector employees and 90% in total (across the labour market).  This reflects the predominance of self-regulation (regulation by the labour market parties themselves) over government regulation in Swedish industrial relations.  Noong Disyembre 18, 1987, nagkasundo naman ang PMI at ang Union of Supervisors and Foremen sa isang collective bargaining agreement (CBA) kung saan ang mga superbisor ay binibigyan ng dagdag na P625 at ang mga foreman naman ay dagdag na P475 kadawan. Ang kasunduan ay susundin mula Mayo 12, 1987 o bago pa man mag-umpisa ang RA 6670 at mananatili hanggang Hulyo 26, 1989. It is a contract concluded at the request of the employer or the exclusive representative of the workers and which contains the agreement concluded after negotiation with regard to wages, working time and any other employment arrangements, including proposals for the adaptation of complaints or issues within the framework of such an agreement. A union or similar collective group of workers is generally seen by its members as a way for employees to negotiate and communicate with their employers or management under a more balanced playing field than if each employee addresses management individually. . .